Saveall



Patented Feb. 3, i925.

UNITED STATES ERNST W'. KOPKE, OF MANILA, PHILIPPINE ISLANDS.

SAVEALL.

Application filed September 19, 1924. Serial No. 738,726.

To all 'whom t may concern:-

Be it known that I, EnNsT WV. Komm, a citizen of the United States, residing in t-he city of Manila, Philippine Islands, have invented certain new and useful Improvements in Savealls; and I do hereby declare the following to be a full, clear, and exact descrip'- tion of the invention such as will enable others skilled in the art to which it appertains to make and use the same.

'Ilhe invention relates to a saveall for e-vaporators and has for its object to provide a simple and eilicient device to be built into evaporators under construction, or to be installed in any standard type of evaporator already constructed and in use, with a minimum of expense and labor, that will effectively separate all liquid entrained in the vapors generated in the evaporator and, preferably, return the separated liquid to the boiler section of the evaporator. To these ends the invention comprises a diaphragm adapted to be interposed in the evaporator belo-w or in advance of the vapor outlet thereof, said diaphragm having a central discharge opening and a series of drainage orifices about its marginal edge adjacent the wall of the evaporator, means associated with the central discharge opening to deiie'ct vapors passing through said opening in a whirling course above the diaphragm and toward-the wall of the evaporator, said means preferably involving a detlector plate substantially parallel with and located a short distance above the diaphragm and overlying the discharge opening, a series of arcuate detlector blades disposed between the diaphragm and the deilector plate and about the central opening in the former, each of the drainage orifices being provided with a balile plate overhanging the same, said battle plates serving to arrest the liquid entrained in the vapors as the vapor laden liquid is directed toward the wall of the evaporator chamber, and to direct the liquid downward through said orifices.

The invention is illustrated in the accompanying drawings in which Figure l is a vertical section through the upper part of a typical evaporator, having the saveall applied thereto.

Figure 2 is a section on line 2 2 of Fig. l.

Figure 3 is an enlarged sectional elevation on line 3-3 of Fig. 2.

Referring to the drawings, l indicates the main shell or body portion of a typical evaporator, such for example as a vacuum pan, which is provided with a conical head section 2 terminating in the discharge neck or outlet 3. Mounted within the cylindrical shell of the evaporator, and preferably near the upper end of said shell and below the outlet 3, is a transverse plate or diaphragm 4, which is fashioned to lit accurately within the shell, which is usually circular in cross section, said diaphragm being secured in position by brackets or angle sections 5. The diaphragm is provided with a relatively large central opening 6 through which the vapors and any liquid entrained therein pass.

The outer peripheral portion of the di aphragm 4 is provided with a series of drainage orilices 9 which are located adjacent the wall of the evaporator' shell l, and secured to the upper face of the diaphragm is a series of baffle plates 10, each of which overhangs a drainage oriiice 9, the body portion of each battle plate being inclined at an angle of substantially degrees to the plane of the diaphragm.

Mounted above the central opening 6 of the diaphragm 4, is .a delector plate 7, which is preferably in the form of a flat disc approximately twice the diameter of the opening 6 and. disposed concentrically with the latter, and interposed between the diaphragm 4 and the deflector plate 7, is a series oit arcuate vanes 8 which extend from the edge of the diaphragm surrounding the opening 6 to the circula-r edge of the deliector plate 7, said plates being disposed iu circular series about the opening 6, as indicated in Fig. 2. l

The operation Vof the device as described is as follows:

The vapors generated in the boiler section of the evaporator pass at relatively high velocity through the central opening 6 toward the discharge opening 3, and tend to carry with them varying percentages of liquid, depending upon the character of the primary liquid which is being operated upon. The vapors and entrained liquid passing through the opening 6 in the diaphragm 4 iinpinge upon the de'flector plate 7 above the opening 6, which changes the course of the flow of vapor liquid abruptlv from a vertical direction toward the outlet 3, to a horizontal direc-tion across the diaphragm 4 and toward the wall of the shell 1. In addition to the change of direction ot' flow from a vertical to a horizontal, the vanes S impart to the vapors and entrained liquid, a whirling movement so that they sweep over the top surface of the diaphragm at relatively high velocity and impinge on the under inclined faces of thc baltle plates lt), which are el'lective to arrest the liquid carried by the vapor and cause the latter to be discharged downwardly through the orifices 9 into the portion of the evaporator chamber l below the diaphragm. The disposition of the battle plates in peripheral series around the diaphragm a, and inclined at an angle to directly oppose the centrifugal whirl of the vapors produced by the deflector plate 7 and the arcuate vanes 8, is effective in setting up a relatively strong down-draft through each of the orifices 9, thereby not only insuring a prompt discharge of the separated liquid from thc vapors, but also preventing any upward flow of the vapors through said orifices 9. In practical application to vacuum pans or similar devices for sugar juices, the apparatus has been foundto be effective in sepa- .rating and recovering practically the entire liquid content of the vapors, and returning the recovered liquid to the boiler section of the evaporator.

Obviously the diaphragm and associated deflector plates 7 yand arcuate vanes 8 may be constructed and assembled in various ways, or if desired may be formed as an integral casting. When, however, it is desired to apply the device to an evaporator that has already been installed and in use, the diaphragm may be formed of one or more sheets or sections, or the diaphragm and the associated deflector plates and vanes may be `formed of `multiple castings which may be individually introduced into :the evaporator shell through the usual manhole, and assembled within the evaporatorI inthe general arrangement indicated in the drawings.

lVhat l claim is:

l. A saveall for evaporators comprising a diaphragm adapted to divide the evaporator below the vapor outlet Ytl1ereof`, 'said diaphragm having a central discharge opening and a series of drainage orifices about its marginal edge adjacent the wall of the evaporator, means associated with the central discharge opening to deflect vapors passing through said opening in a whirling course over said diaphragm and toward the wall of the evaporator, and baffle plates overhanging the drainage orifices torarrest liquid entrained in the vapors Vand direct the liquid downward through said orifices.

2. A saveall for evaporators comprising a diaphragm adapted to 'divide the vevaporator below the vapor outlet thereof, said diaphragm having a central discharge opening and a series of drainage orifices about its marginal edge adjacent the wall of the evaporator, means associated .with the `central discharge opening to deflect vapors passing through said opening in a whirling course over said diaphragm and toward the wall ofthe evaporator, and baffle plates overhanging the drainage orifices inclined in a direction opposite to the movement of the vapors to arrest liquid entrained in the vapors and direct the liquid downward through said orifices.

3. A saveall for evaporators comprising a diaphragm adapted to divide the evapo-` rator below the vapor outlet thereof, said diaphragm having a central discharge opening and a series of drainage orifices about its marginal edgey adjacent the wall of `the evaporator, a deflector plate mountedabove the opening, arcuate deflerctor blades eX- tending between the diaphragm and the dieflector plate and disposed vabout said lcentral opening to ydirect the vaporjlaterally in a whirling course toward the wall of the evaporator, and 'baffle plates overhanging the drainage openings toarrest liquid ientrained inthe vapor and direct the liquid through said orifices.

In testimony whereof I affix my signature. 

